US5793276A - Organic PTC thermistor - Google Patents

Organic PTC thermistor Download PDF

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Publication number
US5793276A
US5793276A US08/682,301 US68230196A US5793276A US 5793276 A US5793276 A US 5793276A US 68230196 A US68230196 A US 68230196A US 5793276 A US5793276 A US 5793276A
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US
United States
Prior art keywords
mesh
ptc thermistor
organic
fluorescent tube
resistivity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US08/682,301
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English (en)
Inventor
Hisanao Tosaka
Minoru Takaya
Shigeru Moriya
Hisashi Kobuke
Munemitsu Hamada
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TDK Corp
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TDK Corp
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Filing date
Publication date
Priority claimed from JP18909695A external-priority patent/JP3229170B2/ja
Priority claimed from JP908496A external-priority patent/JP2936057B2/ja
Priority claimed from JP17423196A external-priority patent/JP2810351B2/ja
Application filed by TDK Corp filed Critical TDK Corp
Assigned to TDK CORPORATION reassignment TDK CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAMADA, MUNEMITSU, KOBUKE, HISASHI, MORIYA, SHIGERU, TAKAYA, MINORU, TOSAKA, HISANAO
Application granted granted Critical
Publication of US5793276A publication Critical patent/US5793276A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/027—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient consisting of conducting or semi-conducting material dispersed in a non-conductive organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/01—Mounting; Supporting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/1406—Terminals or electrodes formed on resistive elements having positive temperature coefficient
US08/682,301 1995-07-25 1996-07-17 Organic PTC thermistor Expired - Lifetime US5793276A (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP18909695A JP3229170B2 (ja) 1995-07-25 1995-07-25 蛍光ランプ異常過熱防止装置
JP7-189096 1995-07-25
JP27355095 1995-09-27
JP7-273550 1995-09-27
JP908496A JP2936057B2 (ja) 1996-01-23 1996-01-23 有機質ｐｔｃサーミスタ
JP8-009084 1996-01-23
JP17423196A JP2810351B2 (ja) 1995-09-27 1996-06-13 有機質正特性サーミスタ
JP8-174231 1996-06-13

Publications (1)

Publication Number Publication Date
US5793276A true US5793276A (en) 1998-08-11

Family

ID=27455091

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/682,301 Expired - Lifetime US5793276A (en) 1995-07-25 1996-07-17 Organic PTC thermistor

Country Status (8)

Country Link
US (1) US5793276A (no)
EP (1) EP0758131B1 (no)
KR (1) KR100295013B1 (no)
CN (1) CN1090797C (no)
DE (1) DE69633547T2 (no)
MY (1) MY115034A (no)
NO (1) NO318126B1 (no)
TW (1) TW312794B (no)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6159635A (en) * 1998-09-29 2000-12-12 Electrofuel Inc. Composite electrode including current collector
US6252357B1 (en) * 1998-03-31 2001-06-26 Toshiba Lighting & Technology Corporation Self-ballasted fluorescent lamp and lighting fixture
US6362721B1 (en) * 1999-08-31 2002-03-26 Tyco Electronics Corporation Electrical device and assembly
US20030076217A1 (en) * 2001-10-12 2003-04-24 Ceratech Corporation Polymeric PTC device capable of returning to its initial resistance after overcurrent protection
US20030098772A1 (en) * 2000-01-28 2003-05-29 Tseung Alfred Chan Chung Carbon monoxide detector
US6597551B2 (en) 2000-12-13 2003-07-22 Huladyne Corporation Polymer current limiting device and method of manufacture
US20040259794A1 (en) * 1999-06-10 2004-12-23 Cognetix, Inc. MuO-conopeptides and their use as local anesthetics
US20070024412A1 (en) * 2005-07-28 2007-02-01 Wang Shau C Over-current protection device
US20070187655A1 (en) * 2006-02-15 2007-08-16 Polytronics Technology Corporation Over-current protection device
US7286038B1 (en) * 2006-09-26 2007-10-23 Polytronics Technology Corporation Over-current protection device
US20080116424A1 (en) * 2006-11-20 2008-05-22 Sabic Innovative Plastics Ip Bv Electrically conducting compositions
DE102007029525A1 (de) * 2007-04-12 2008-10-23 Metallux Ag Verbundbauteil
US20120205679A1 (en) * 2011-02-14 2012-08-16 Semiconductor Energy Laboratory Co., Ltd. Light-Emitting Module, Light-Emitting Panel, and Lighting Device
KR101302863B1 (ko) * 2005-08-11 2013-09-02 폴리트로닉스 테크놀로지 코포레이션 과전류 보호 장치
US20150023393A1 (en) * 2012-01-30 2015-01-22 Pst Sensors (Proprietary) Limited Large Area Temperature Sensor
US9295944B2 (en) 2011-12-27 2016-03-29 Toyota Jidosha Kabushiki Kaisha Electrically heated catalyst device and its manufacturing method
WO2018080441A1 (en) * 2016-10-25 2018-05-03 Hewlett-Packard Development Company, L.P. Temperature sensors
CN109545484A (zh) * 2017-09-22 2019-03-29 力特有限公司 具有低熔融温度的聚合物主体的pptc器件
US20190123457A1 (en) * 2017-10-23 2019-04-25 Illinois Tool Works Inc. High wattage solderless flexible connector for printed conductors
US10575412B2 (en) 2016-12-27 2020-02-25 Mitsuboshi Belting Ltd. Electroconductive paste, electronic substrate, and method for manufacturing said substrate
US11984285B2 (en) 2021-06-16 2024-05-14 Littelfuse, Inc. PPTC device having low melting temperature polymer body

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW344828B (en) * 1997-02-28 1998-11-11 Mitsubishi Electric Corp Organic positive temperature coefficient composition and a circuit protection device using such composition
JP3219044B2 (ja) * 1997-03-31 2001-10-15 松下電器産業株式会社 環形蛍光ランプ
EP0932166B1 (en) * 1998-01-22 2007-03-21 Mitsubishi Denki Kabushiki Kaisha Polymeric PTC composition and circuit protection device made therefrom
US6677074B2 (en) * 1998-06-25 2004-01-13 Mitsubishi Denki Kabushiki Kaisha Cell and method of producing the same
EP1100135A4 (en) * 1998-06-25 2006-06-14 Mitsubishi Electric Corp CELL AND METHOD FOR THE PRODUCTION THEREOF
JP3857571B2 (ja) * 2001-11-15 2006-12-13 タイコ エレクトロニクス レイケム株式会社 ポリマーｐｔｃサーミスタおよび温度センサ
TWI282696B (en) 2005-12-27 2007-06-11 Polytronics Technology Corp Surface-mounted over-current protection device
USRE44224E1 (en) 2005-12-27 2013-05-21 Polytronics Technology Corp. Surface-mounted over-current protection device
US8044763B2 (en) 2005-12-27 2011-10-25 Polytronics Technology Corp. Surface-mounted over-current protection device
CN101162632B (zh) * 2006-10-10 2010-05-19 聚鼎科技股份有限公司 过电流保护组件
CN102127287A (zh) * 2011-01-31 2011-07-20 上海长园维安电子线路保护股份有限公司 导电复合材料及由其制备的ptc热敏元件
CN106317544B (zh) * 2015-06-30 2018-12-21 上海利韬电子有限公司 导电聚合物组合物、导电聚合物片材、电气器件以及它们的制备方法
TWI642148B (zh) * 2016-12-27 2018-11-21 日商三星皮帶股份有限公司 Conductive paste and electronic substrate and method of manufacturing same

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3591526A (en) * 1968-01-25 1971-07-06 Polyelectric Corp Method of manufacturing a temperature sensitive,electrical resistor material
US3673121A (en) * 1970-01-27 1972-06-27 Texas Instruments Inc Process for making conductive polymers and resulting compositions
US4237441A (en) * 1978-12-01 1980-12-02 Raychem Corporation Low resistivity PTC compositions
EP0045630A2 (en) * 1980-07-31 1982-02-10 RAYCHEM CORPORATION (a California corporation) Devices comprising conductive polymers and method of making them
US4369343A (en) * 1979-11-26 1983-01-18 Nissan Motor Co., Ltd. Ignition distributor having electrodes with thermistor discharging portions
DE3311051A1 (de) * 1983-03-25 1984-09-27 Siemens AG, 1000 Berlin und 8000 München Flexibles heizelement in bandform, das aus elektrisch leitfaehigen koernchen aus ptc-material und einem organischen isolierenden kunststoff als bindemittel besteht, und verfahren zur herstellung des flexiblen heizelementes
US4545926A (en) * 1980-04-21 1985-10-08 Raychem Corporation Conductive polymer compositions and devices
JPS6285401A (ja) * 1985-10-09 1987-04-18 株式会社村田製作所 有機質正特性サ−ミスタ
JPH0216002A (ja) * 1988-05-11 1990-01-19 Ludy Spoelders ベニヤ用化粧板テープ末端部の切断及び接着装置
JPH0286087A (ja) * 1988-09-21 1990-03-27 Tdk Corp 低抵抗ｐｔｃ素子
US4924204A (en) * 1987-11-27 1990-05-08 Murata Manufacturing Co., Ltd. Organic PTC thermistor device
US4977309A (en) * 1988-04-06 1990-12-11 Murata Manufacturing Co., Ltd. Organic PTC thermistor
WO1991019297A1 (en) * 1990-06-05 1991-12-12 Asea Brown Boveri Ab Method of manufacturing an electrical device
JPH0444401A (ja) * 1990-06-11 1992-02-14 Murata Mfg Co Ltd 誘電体フィルタ装置
US5212466A (en) * 1989-05-18 1993-05-18 Fujikura Ltd. Ptc thermistor and manufacturing method for the same
US5214738A (en) * 1989-08-07 1993-05-25 Mitsui Toatsu Chemicals, Inc. Positive coefficient thin-film thermistor
US5245309A (en) * 1991-03-12 1993-09-14 Murata Manufacturing Co., Ltd. Thermistor element
US5247276A (en) * 1990-04-25 1993-09-21 Daito Communication Apparatus Co., Ltd. Ptc device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62299833A (ja) * 1986-06-19 1987-12-26 Matsushita Graphic Commun Syst Inc 照明光源装置
JPH01257304A (ja) * 1988-04-06 1989-10-13 Murata Mfg Co Ltd 有機正特性サーミスタ
JPH0651859B2 (ja) * 1989-04-04 1994-07-06 帝国通信工業株式会社 摺接パターン用印刷導電ペースト
JPH05109502A (ja) * 1991-10-18 1993-04-30 Daito Tsushinki Kk Ｐｔｃ素子

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3591526A (en) * 1968-01-25 1971-07-06 Polyelectric Corp Method of manufacturing a temperature sensitive,electrical resistor material
US3673121A (en) * 1970-01-27 1972-06-27 Texas Instruments Inc Process for making conductive polymers and resulting compositions
US4237441A (en) * 1978-12-01 1980-12-02 Raychem Corporation Low resistivity PTC compositions
US4369343A (en) * 1979-11-26 1983-01-18 Nissan Motor Co., Ltd. Ignition distributor having electrodes with thermistor discharging portions
US4545926A (en) * 1980-04-21 1985-10-08 Raychem Corporation Conductive polymer compositions and devices
EP0045630A2 (en) * 1980-07-31 1982-02-10 RAYCHEM CORPORATION (a California corporation) Devices comprising conductive polymers and method of making them
DE3311051A1 (de) * 1983-03-25 1984-09-27 Siemens AG, 1000 Berlin und 8000 München Flexibles heizelement in bandform, das aus elektrisch leitfaehigen koernchen aus ptc-material und einem organischen isolierenden kunststoff als bindemittel besteht, und verfahren zur herstellung des flexiblen heizelementes
JPS6285401A (ja) * 1985-10-09 1987-04-18 株式会社村田製作所 有機質正特性サ−ミスタ
US4924204A (en) * 1987-11-27 1990-05-08 Murata Manufacturing Co., Ltd. Organic PTC thermistor device
US4977309A (en) * 1988-04-06 1990-12-11 Murata Manufacturing Co., Ltd. Organic PTC thermistor
JPH0216002A (ja) * 1988-05-11 1990-01-19 Ludy Spoelders ベニヤ用化粧板テープ末端部の切断及び接着装置
JPH0286087A (ja) * 1988-09-21 1990-03-27 Tdk Corp 低抵抗ｐｔｃ素子
US5212466A (en) * 1989-05-18 1993-05-18 Fujikura Ltd. Ptc thermistor and manufacturing method for the same
US5214738A (en) * 1989-08-07 1993-05-25 Mitsui Toatsu Chemicals, Inc. Positive coefficient thin-film thermistor
US5247276A (en) * 1990-04-25 1993-09-21 Daito Communication Apparatus Co., Ltd. Ptc device
WO1991019297A1 (en) * 1990-06-05 1991-12-12 Asea Brown Boveri Ab Method of manufacturing an electrical device
JPH0444401A (ja) * 1990-06-11 1992-02-14 Murata Mfg Co Ltd 誘電体フィルタ装置
US5245309A (en) * 1991-03-12 1993-09-14 Murata Manufacturing Co., Ltd. Thermistor element

Non-Patent Citations (12)

* Cited by examiner, † Cited by third party
Title
Derwent Publications, Database WPI, an 90 365449, JP 02 263 877, Oct. 26, 1990. *
Derwent Publications, Database WPI, an 90-365449, JP 02 263 877, Oct. 26, 1990.
Iwao Sugaya, et al. "Low power Consumption Technology of `Viewcam`", Sharp Giho, (pp. 49-52), May, 1994.
Iwao Sugaya, et al. Low power Consumption Technology of Viewcam , Sharp Giho, (pp. 49 52), May, 1994. *
Patent Abstracts of Japan vol. 012, No. 194, (p 713), Jun. 7, 1988, JP 62 299833, Dec. 26, 1987. *
Patent Abstracts of Japan vol. 012, No. 194, (p-713), Jun. 7, 1988, JP 62 299833, Dec. 26, 1987.
Patent Abstracts of Japan, vol. 017, No. 460, (E 1419), Aug. 23, 1993, JP 05 109502, Apr. 30, 1993. *
Patent Abstracts of Japan, vol. 017, No. 460, (E-1419), Aug. 23, 1993, JP 05 109502, Apr. 30, 1993.
T.R. Shrout, et al. "Composite PTCR Thermistors Utilizing Conducting Borides, Silicides, and Carbide Powders", Journal of Materials Science, No. 26, (pp. 145-154), 1991.
T.R. Shrout, et al. "Optimun TiB2 Ceramic Powder for Composite Thermistors", Journal of Materials Science Letters, No. 9, (pp. 611-612), 1990.
T.R. Shrout, et al. Composite PTCR Thermistors Utilizing Conducting Borides, Silicides, and Carbide Powders , Journal of Materials Science, No. 26, (pp. 145 154), 1991. *
T.R. Shrout, et al. Optimun TiB 2 Ceramic Powder for Composite Thermistors , Journal of Materials Science Letters, No. 9, (pp. 611 612), 1990. *

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6252357B1 (en) * 1998-03-31 2001-06-26 Toshiba Lighting & Technology Corporation Self-ballasted fluorescent lamp and lighting fixture
US6159635A (en) * 1998-09-29 2000-12-12 Electrofuel Inc. Composite electrode including current collector
US20040259794A1 (en) * 1999-06-10 2004-12-23 Cognetix, Inc. MuO-conopeptides and their use as local anesthetics
US6362721B1 (en) * 1999-08-31 2002-03-26 Tyco Electronics Corporation Electrical device and assembly
US6930586B2 (en) * 2000-01-28 2005-08-16 Catalytic Electrodes Limited Carbon monoxide detector
US20030098772A1 (en) * 2000-01-28 2003-05-29 Tseung Alfred Chan Chung Carbon monoxide detector
US6885279B2 (en) * 2000-01-28 2005-04-26 Catalytic Electrodes Limited Carbon monoxide detector
US6597551B2 (en) 2000-12-13 2003-07-22 Huladyne Corporation Polymer current limiting device and method of manufacture
US20050001207A1 (en) * 2001-10-12 2005-01-06 Ceratech Corporation Polymeric PTC device capable of returning to its initial resistance after overcurrent protection
US20030076217A1 (en) * 2001-10-12 2003-04-24 Ceratech Corporation Polymeric PTC device capable of returning to its initial resistance after overcurrent protection
US20070024412A1 (en) * 2005-07-28 2007-02-01 Wang Shau C Over-current protection device
KR101302863B1 (ko) * 2005-08-11 2013-09-02 폴리트로닉스 테크놀로지 코포레이션 과전류 보호 장치
US20070187655A1 (en) * 2006-02-15 2007-08-16 Polytronics Technology Corporation Over-current protection device
US7352272B2 (en) * 2006-02-15 2008-04-01 Polytronics Technology Corporation Over-current protection device
US7286038B1 (en) * 2006-09-26 2007-10-23 Polytronics Technology Corporation Over-current protection device
US20080116424A1 (en) * 2006-11-20 2008-05-22 Sabic Innovative Plastics Ip Bv Electrically conducting compositions
US8728354B2 (en) 2006-11-20 2014-05-20 Sabic Innovative Plastics Ip B.V. Electrically conducting compositions
DE102007029525A1 (de) * 2007-04-12 2008-10-23 Metallux Ag Verbundbauteil
US9735209B2 (en) 2011-02-14 2017-08-15 Semiconductor Energy Laboratory Co., Ltd. Light-emitting module, light-emitting panel, and lighting device
US20120205679A1 (en) * 2011-02-14 2012-08-16 Semiconductor Energy Laboratory Co., Ltd. Light-Emitting Module, Light-Emitting Panel, and Lighting Device
US9035337B2 (en) * 2011-02-14 2015-05-19 Semiconductor Energy Laboratory Co., Ltd. Light-emitting module, light-emitting panel, and lighting device
US9295944B2 (en) 2011-12-27 2016-03-29 Toyota Jidosha Kabushiki Kaisha Electrically heated catalyst device and its manufacturing method
US20150023393A1 (en) * 2012-01-30 2015-01-22 Pst Sensors (Proprietary) Limited Large Area Temperature Sensor
WO2018080441A1 (en) * 2016-10-25 2018-05-03 Hewlett-Packard Development Company, L.P. Temperature sensors
US11199456B2 (en) 2016-10-25 2021-12-14 Hewlett-Packard Development Company, L.P. Temperature sensors
US10575412B2 (en) 2016-12-27 2020-02-25 Mitsuboshi Belting Ltd. Electroconductive paste, electronic substrate, and method for manufacturing said substrate
CN109545484A (zh) * 2017-09-22 2019-03-29 力特有限公司 具有低熔融温度的聚合物主体的pptc器件
US20190123457A1 (en) * 2017-10-23 2019-04-25 Illinois Tool Works Inc. High wattage solderless flexible connector for printed conductors
US10601148B2 (en) * 2017-10-23 2020-03-24 Illinois Tool Works Inc. High wattage solderless flexible connector for printed conductors
US11984285B2 (en) 2021-06-16 2024-05-14 Littelfuse, Inc. PPTC device having low melting temperature polymer body

Also Published As

Publication number Publication date
KR100295013B1 (ko) 2001-11-30
NO963059D0 (no) 1996-07-23
KR970008228A (ko) 1997-02-24
EP0758131A3 (en) 1997-08-20
CN1150314A (zh) 1997-05-21
DE69633547D1 (de) 2004-11-11
CN1090797C (zh) 2002-09-11
NO318126B1 (no) 2005-02-07
EP0758131B1 (en) 2004-10-06
EP0758131A2 (en) 1997-02-12
MY115034A (en) 2003-03-31
DE69633547T2 (de) 2005-02-03
NO963059L (no) 1997-01-27
TW312794B (no) 1997-08-11

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